build(deps): bump matplotlib from 3.7.2 to 3.8.1 (#9)

Bumps [matplotlib](https://github.com/matplotlib/matplotlib) from 3.7.2
to 3.8.1.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/matplotlib/matplotlib/releases">matplotlib's
releases</a>.</em></p>
<blockquote>
<h2>REL: v3.8.1</h2>
<p>This is the first bugfix release of the 3.8.x series.</p>
<p>This release contains several bug fixes and adjustments:</p>
<ul>
<li>Bump setuptools required version because of setuptools_scm v8</li>
<li>Update <code>find_nearest_contour</code> and revert contour
deprecations</li>
<li><code>allsegs</code> and <code>allkinds</code> return individual
segments</li>
<li>Restore default behavior of hexbin mincnt with C provided</li>
<li>Try/except import of Axes3D</li>
<li>Ensure valid path mangling for ContourLabeler</li>
<li>BLD: Remove development dependencies from sdists</li>
<li>FIX 2-tuple of colors in to_rgba_array</li>
<li>Fix issue with non-string labels and legend</li>
<li>Fix issue with locale comma when not using math text</li>
<li>Various type hinting improvements</li>
<li>Various documentation improvements</li>
<li>Improvements to the MacOS backend</li>
</ul>
<p>REL: v3.8.0</p>
<p>Highlights of this release include:</p>
<ul>
<li>Type hints for most public APIs</li>
<li>Many improvements to Mathtext
<ul>
<li>Addition of <code>\boldsymbol</code> command</li>
<li>Additional sizable delimiters</li>
<li>Documentation improvements</li>
<li><code>\substack</code> command</li>
<li><code>\middle</code> delimitier</li>
<li><code>\mathbfit</code> for bold italic text</li>
</ul>
</li>
<li>3D plotting improvements
<ul>
<li>Specify tick/axis label positions</li>
<li>Improved text for coordinates in interactive sessions</li>
<li>Ability to share view angles</li>
</ul>
</li>
<li>New plotting method <code>ecdf</code> (empirical cumulative
distribution function)</li>
</ul>
<h2>v3.8.0rc1</h2>
<p>First release candidate for Matplotlib v3.8.0</p>
<h2>REL: v3.7.3</h2>
<p>This is the third bugfix release of the 3.7.x series.</p>
<p>This release contains several bug-fixes and adjustments:</p>
<ul>
<li>Add Python 3.12 wheels</li>
<li>Update the license for the bundled colorbrewer colormap data</li>
<li>Fix Cairo backend when using cairocffi</li>
</ul>
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</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/matplotlib/matplotlib/commit/fac632fe3c66344418b654d0ac86e9598c1fa89f"><code>fac632f</code></a>
REL: v3.8.1</li>
<li><a
href="https://github.com/matplotlib/matplotlib/commit/8c517cd03553a59e97bdb00289bfd17fec0c7aec"><code>8c517cd</code></a>
Release prep v3.8.1</li>
<li><a
href="https://github.com/matplotlib/matplotlib/commit/8c6b3e92b83b6fdcba39961d105161d7c9404931"><code>8c6b3e9</code></a>
Merge remote-tracking branch 'origin/v3.8.0-doc' into v3.8.x</li>
<li><a
href="https://github.com/matplotlib/matplotlib/commit/043a191d2ee44591ab61b69c44835017faaafaca"><code>043a191</code></a>
Merge pull request <a
href="https://redirect.github.com/matplotlib/matplotlib/issues/27240">#27240</a>
from meeseeksmachine/auto-backport-of-pr-27237-on-v...</li>
<li><a
href="https://github.com/matplotlib/matplotlib/commit/08876f8c8035a6778d3d81d46f48eb03225c246d"><code>08876f8</code></a>
Merge pull request <a
href="https://redirect.github.com/matplotlib/matplotlib/issues/27239">#27239</a>
from meeseeksmachine/auto-backport-of-pr-27237-on-v...</li>
<li><a
href="https://github.com/matplotlib/matplotlib/commit/dc37d9640d226eccee4d1ac36aa0a1eb64e39da6"><code>dc37d96</code></a>
Merge pull request <a
href="https://redirect.github.com/matplotlib/matplotlib/issues/27238">#27238</a>
from meeseeksmachine/auto-backport-of-pr-27165-on-v...</li>
<li><a
href="https://github.com/matplotlib/matplotlib/commit/be5b1f5c97db70351ad7797e4811d0a7476aa52d"><code>be5b1f5</code></a>
Backport PR <a
href="https://redirect.github.com/matplotlib/matplotlib/issues/27237">#27237</a>:
DOC: Add command to install appropriate `requirements.txt...</li>
<li><a
href="https://github.com/matplotlib/matplotlib/commit/58a7f9af474675f424aa94fcdae1ca51a2b1dfd0"><code>58a7f9a</code></a>
Backport PR <a
href="https://redirect.github.com/matplotlib/matplotlib/issues/27237">#27237</a>:
DOC: Add command to install appropriate `requirements.txt...</li>
<li><a
href="https://github.com/matplotlib/matplotlib/commit/0a775917db9747e5446794e52dc1a79d3d356d5d"><code>0a77591</code></a>
Backport PR <a
href="https://redirect.github.com/matplotlib/matplotlib/issues/27165">#27165</a>:
Fixing Matplotlib Notebook Text</li>
<li><a
href="https://github.com/matplotlib/matplotlib/commit/2e68a4e9fe49786bd33459f7be93f55e1995463c"><code>2e68a4e</code></a>
Merge pull request <a
href="https://redirect.github.com/matplotlib/matplotlib/issues/27229">#27229</a>
from ksunden/auto-backport-of-pr-27226-on-v3.8.x</li>
<li>Additional commits viewable in <a
href="https://github.com/matplotlib/matplotlib/compare/v3.7.2...v3.8.1">compare
view</a></li>
</ul>
</details>
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requirements.txt

@@ -1,7 +1,7 @@
 h5py == 3.9.0
 jupyter == 1.0.0
 keras == 2.14.0
-matplotlib == 3.7.2
+matplotlib == 3.8.1
 notebook == 7.0.4
 numpy == 1.25.2
 pandas == 2.0.1